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How To Calculate Different Types of Rate
How To Calculate Different Types of Rate
By indeed Editorial Team
December 30, 2021TwitterLinkedInFacebookEmail A rate is a calculation that you might need frequently in commercial enterprise. You can use rate calculations to monitor your productivity or determine the cost of certain products or activities. The rate can besides show the changes in a relationship between two pieces of data, such as when companies calculate a success rate for their occupation at the begin of a fiscal year and the end. In this article, we define what rate is and discuss how to calculate it .
What is rate?
rate is the comparison of two pieces of data that use different measurements. You can use rate to analyze data and determine the relationship between certain instances or occurrences. For model, you might want to find the pace at which you complete your daily work tasks, which would involve measurement of workplace you completed compared to a measurement of time. People typically write a rate as two values with a colon between them, like “ pieces of work completed : hours taken ” or as a instruction like “ five tasks completed per three hours of ferment. ” Related : Guide To Rate of Return
How to calculate rate
here are the steps for calculating pace :
1. Identify the measurements being compared
Write out the two measurements you want to compare. For exemplar, you might find the rate at which you organize files by comparing the act of files organized to the number of hours it takes to file each document. If you can file 40 documents in two hours, your two data points for comparison would be 40 documents and two hours .
2. Compare the measurements side-by-side
Format your rate by placing your data into the rate rule of ten : y. Thinking about the example of organizing files, you can consider the measurements of 40 documents and two hours. You can write the rate to look like “ 40 documents : two hours ” or “ 40 documents filed every two hours. ”
3. Simplify your calculations by the greatest common factor
Divide each respect by the greatest common agent between the two data points you ‘re comparing. In the example of filing documents, the greatest common factor between 40 and two is two, so you can divide both measurements by two to simplify the pace. You can then list the results for the time it takes to organize files according to the previous data as 20 files for every one hour .
4. Express your found rate
Show your calculated rate by writing your findings in a ratio or rate statement. For the exercise of organizing files, the concluding rate reads “ 20 files : one hour ” or “ 20 documents filed per hour. ” Related : How To Calculate Different Types of Rate
Rate vs. ratio
rate and proportion are both basic concepts in mathematics. however, the two values function differently .
- ratio : A proportion shows a comparison between two quantities, typically displayed with a colon. An case would be if person has one desk and two computers, as their desk-to-computer proportion would equal “ 1:2. ”
- rate : A rate is a specify proportion that compares two or more different measurement units. For exercise, if person writes 1,000 words every two hours at work, they can represent their writing rate as “ 1,000 words : two hours ” or “ 1,000 words every two hours. ”
Related : How To Calculate Ratios ( With Examples )
How to calculate percent change
You can measure the percentage of switch by the percentage increase or decrease. hera are a few steps for calculating percentage deepen :
1. Find the difference between the two data values
Subtract your original value from the newfangled value if you ‘re calculating a percentage addition. For a percentage decrease, subtract the new value from the original value. If you ‘re looking for the percentage switch between two quarters of sales, this calculation might look like this : $ 18,000 ( stern 2 ) – $ 15,000 ( one-fourth 1 ) = $ 3,000 in remainder. This exemplar explores a percentage increase, so the second quarter is the inaugural value and the first quarter is the second base value being subtracted .
2. Divide the difference by the original number
Take the difference calculated by subtracting the values and divide it by the original number. In the example of finding the percentage change for two sales quarters, you can divide the remainder of $ 3,000 by the value for quarter one : $ 15,000. The result figure is 0.2 .
3. Multiply the results by 100
Find the percentage of change by multiplying the solution of division by 100. For this case with sales quarters, you can multiply .2 by 100 to achieve a result of 20 % .
4. Determine if you have a percent increase or a percent decrease
Compare your results to your initial data values. If you perform a calculation expecting a share increase and receive a negative number as a result, the percentage change is actually a share decrease. In the same direction, if you perform calculations for a percentage decrease and it results in a negative rate, the percentage change is actually a share addition. In the example comparing sales quarters, the solution produces a incontrovertible number after conducting calculations for a share increase, so the percentage change is a 20 % increase. Related : How To Calculate Percentage, Percentage Change and Percentage Difference
How to calculate prevalence rate
prevalence rate describes how often something occurs within a specific population group. here are the steps for calculating the prevalence rate :
1. Identify the population size
Determine the number of people in the group for which you want to calculate the preponderance rate. If you ‘re calculating something like the prevalence of influenza cases in an office of 200 people, your population group is the total number of people in the office .
2. Find the value of prevalence
Find the number of instances that you ‘re trying to determine the prevalence of. For exemplar, if 35 people in the agency call option in pale with the influenza, your value for this dowry is 35 .
3. Divide the value of prevalence by the population size
Take the numeral of cases you ‘re evaluating and divide it by the prize that represents the population size you ‘re determining preponderance in. For the exercise of influenza in the office, you can divide the number of influenza cases, 35, by the total number of people in the position, 200. The consequence for this calculation is .175 .
4. Multiply the result by 100
Find the share of preponderance by multiplying the result by dividing the count of cases by the entire population. As the class for this exemplar produces .175, multiplying it by 100 results in a prevalence rate of 17.5 %. Related : How To Calculate Percentages in 3 easy Steps ( With Examples )
How to calculate incidence rate
incidence rate most frequently represents the number of people who might be at risk for contracting a disease in a specify time period of time. here are the steps for calculating incidence rate :
1. Identify the number of new cases
Write down the number of newfangled cases found in the period of time you ‘re considering. For case, if 18 employees in an agency of 75 develop an center infection over the run of one calendar month, the phone number of new cases is 18 in one month .
2. Determine the population size
Find the number of people in the population you want to test. In the model looking for the incidence rate of contracting an eye infection at the office, the population size includes everyone in the office, in this character, 75 .
3. Divide the number of cases by population at risk multiplied by the period of time considered
Take the figure representing the entire total of new cases and divide it by the sum population at gamble, multiplied by the menstruation of clock time in which the new cases occur. For the case of eye infections at the position, the entire count of new cases is 18, and the full population is 75 employees. Because the cases occur in one calendar month, the value that you ‘re dividing the total of cases by remains at 75. This produces a consequence of .24 .
4. Multiply the results by 100 to reach a percentage
Multiply the results from division by 100 to display the incidence rate as a share. This footprint is optional but can help with the readability of an incidence rate, as they often appear as very little numbers. For the eye infection model, the incidence rate for those at gamble of contracting an center infection is .24 or 24 %.